The aim of this study was to examine the effect of job enrichment system in terms of brain activation by measuring EEG. Ten male students participated in both a assembly work of Lego blocks without any feedback information (No-feedback task) and a job enrichment which receives feedback information for the work progress and the faults in the assembly work (Feedback task). We measured EEG, ECG, Jikaku-sho Shirabe, NASA-TLX, and morale survey. The results were as follows: (1) In Feedback task, productivity was significantly boosted by increasing worker morale such as fun, enthusiasm, and sense of fulfillment and accomplishment. (2) Subjective ratings of dullness, boredom, frustration was significantly lower in Feedback task than in No-feedback task. (3) Heart rate significantly increased in Feedback task compared with in No-feedback task. (4) Alpha1 (8-10Hz) and alpha 2 (10-13Hz) waves related with sense of fun, fulfillment, and accomplishment in frontal and central areas increased in Feedback task compared with in No-feedback task. The results suggest that the job enrichment with feedback information had a positive effect on workers, and the effectiveness of job enrichment system was demonstrated by measuring of psychological parameters including EEG.
